Mark4 5-Inch FPV Racing Drone Frame 225mm to 473mm Sizes for Freestyle and Racing

Mark4 carbon-fiber FPV racing frame from Readytosky, offered in three sizes: 225 mm (about 8.9 in), 260 mm (about 10.2 in) and 295 mm (about 11.6 in). Built from carbon fiber for a light, stiff chassis, it accepts standard FPV racing components and upgrade frames. Designed for remote-control vehicles and toys, it fits common remote controllers and is intended for use with commercial brushless motors. Sold as the frame only and ideal for builders who want a compact, durable layout for high-speed quad setups.